Corrugated-metal end for freight cars



Apr. 3, 1923. I 1,450,233

v. E. SISSON CORRUGATED METAL END FOR FREIGHT C'ARS Fild Oct .1, 1920 2 sheets-sheet 1' 0 k 000000-0000O900 OO-00O0O-O6OOQ00O Apr. 3, 1923.

V. E. SISSON CORRUGATED METAL END FOR FREIGHT CARS F led Oct.

2 sheets ,sheet 2 Fill/Ill!!! .IIIIIIIIIIA I n FIG-3 FIG. 8

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r Apr. 3, 1923.

UNITED (STATES PATENT OFFICE;

N E. SISSON', OF CHICAGO, ILLINOIS, ASSIGNORTO WALTER-P. MURPHY, OF

CHICAGO, ILLINOIS.

CORRUGATED-METAL END ron FREIGHT cans. 1

Application filed October 1, 1920. Serial No. 114,057.

1710 whom it may concern:

Be it klOWIl that I, VINTON E. SIssON, a :eifizen of the United States, residing at )laicago, :in the county of Cook and State of 55 is, lhave invented new and useful Impts in Corrugated-Metal Ends for Freight Cars, of which the following is a specification.

invention relates to improvements in end structures for railway cars and more particularly to sheet metal ends for freight cars. l

The end of a freight car is subject to very severe shocks and stresses on account of the tendency of the cargo to shift when the train starts stops and in switching and also to the tendency of the superstructure of the rear to weave while the train is in motion. To strengthen this type of car, ends have been constructed of one or more sheets orpanels of metal, usually steel, which sheets or panels are formed with corrugations for rigidifying the structure to more readily meet impacts from without, cargo thrusts from within, and the racking strains from weav- It is the object of this invention to provide an end of the sheet metal type which is adapt- 3 able to either. wooden car'frames or' all for strengthening gondola cars, box cars, or other similar cars. It is a further object of this invention toprovide the sheets or panels of the :end with corrugations of particular contour that from their form and length are peculiarly adapted to meet the stresses and strains already described. The corrugations :may :berall pressedfrom one side of the sheet of metal or may be formed from opposite sides, as desired.

While the preferred forms of this invention are illustrated upon the accompanying sheets of drawings, yet it is to be understood that minor detail changes may be made without departing from the scope thereof.

In the drawings:

Figure 1 is a view in end elevation of a box car illustrating an embodiment of this inventon.

Flgure 2 is a view in horizontal section metal freight cars and that may be employed 4 through the end taken on the line 22 of. Figure 1.

Figure 3 is an enlarged detail sectional view taken on the line 3-3 of Figure 2.

Figure 4 is an enlarged detail sectional view taken on the line 4-4 of Figure 2.

Figure 5 is an enlarged detail sectional view taken on the line 5-5 of Figure 2.

Figure 6 is an enlarged detail sectional view taken on the line 66" ofFigure 2.

Figure 7 is an enlarged detail elevation of a fragment of a corner of an end panel.

Figure 8 is an enlarged detail sectional view taken on the line. 8-8 of Figure 7.

The invention is illustrated as applied to a box car end which is shown as comprising two or more sheets orpanels 1, preferably of pressed steel, which are attached to the corner post, end plate and end sill in the usual manner. Figure 2 illustrates a means of attaching the panels to the wooden corner posts 2 by fianging the ends of the panels and securing the flanges to the corner posts.

The contour of the""corrugations, in accordance with this invention, at the center have a continuous curved formation and as each corrugation becomes shallower towards its ends one radius is replaced by two varying radii with a flat portion interposed, the width of the corrugation remaining con- 80 stant. As shown in Figures'2 and 8, the corrugations are pressed from one side of the panel and, as shown in Figure 3, are formed at the center on arcs of similar circles whose centers are equidistant and lie'in the same plane which is parallel to the plane of the panel, and therefore the wall of each corrugation at the center is in the form of a semicircle 3 merging into similar and tangental semicircular portions 4 on each side thereof. As the corrugations depart from the center towards the ends the depth of the corrugation decreases and each radius becomes two similarly varying radii with the centers of each pair in the same plane, .forming flat main walls 5 substantially equidistant and perpendicular to the plane of the panel connected by fiat portions 6 which, in cross section, are substantially parallel to the plane of the panel, as

shown in Figure 4. As the corrugation approaches its end the depth decreases from the center constantly, as shown in Figure 2 and also in Figures t and 5, until adjacent the end where it is merged into the plane of the panel as shown in Figures 7 and 8.

The variation of contour and depth from the center to the end of the corrugation increases the amount of metal positioned away from the neutral axis to the maximum, for a corrugation of that width and depth, so that the strength of the corrugation is not decreased proportionately with its depth. In pressing,-the maximum amount of metal is positioned away from the neutral axis towards the ends of the corrugations with substantially the same amount of stretch throughout the corrugations. The length of the radii and width of flat portion 5 are dimensioned so that the length of the center line of a corrugation remains constant. The length of this line is determined by the length of the are 3 of the corrugations, as shown in Fig. 3. This produces the desired result, that the stretch of metal necessary to form the contourof corrugations adjacent the center (Fig. 3) is the same as at any other part of the corrugation, such as 44 or 5-5 in Fig. 1. These remarks do not apply to the terminals between lines 55 and 6-6 in Fig. 1. The panel on account of the spring like action of the arcuate contour of the corrugations at the center is resilient at this point which resiliency decreases towards the ends as the arcuate contour changes to the rectangular. The change in contour of the corrugation from center to ends allows of pressing without undue stretching and at the same time allows greater resiliency to be produced at the center.

Considering the corrugation as a beam, the flat portions 6 disposed alternately on the opposite sides of the neutral axis form compression and tension members which merge from an arcuate form at the center to a rectangular form on approaching the ends and this flat portion increases in width as it departs from the arcuate to the flat.

What I claim is:

1. A metal panel for car ends having a plurality of corrugations therein formed with arcuate contours which merge into substantially rectangular contours.

2. A metal panel for car ends having a plurality of corrugations therein formed with arcuate contours which merge into substantially rectangular contours, said corrugations varying in depth.

3. A metal panel for car ends having a plurality of corrugations therein formed with arcuate contours which merge into substantially rectangular contours, said corrugations remaining constant in width.

4. A metal panel for car ends having 11 plurality of corrugations therein iormed with arcuate contours which merge into substantially rectangular contours, said corrugations remaining constant in width and varying in depth.

5. A metal panel for car ends having a plurality of corrugations therein formed with semicircular tangential walls at the center merging into substantially flat walls towards the ends.

6. A metal panel for car ends having a plurality of corrugations therein, said corrugations varying in depth from center to ends, and merging from arcuate into rectangular contours.

7 A metal panel for car ends having a plurality of corrugations therein formed with similar semicircular tangential walls, the centers of which lie in a plane parallel to the panel, at the center, which walls flatten towards the ends and are connected by arcuate portions of varying radii.

8. A metal panel for car ends having a plurality of corrugations therein formed with similar semicircular tangential walls, the centers of which lie in a plane parallel to the panel, at the center, which walls flatten with decreasing depth towards the ends and are connected by arcuate portions of varying radii.

9. A metal panel for car ends having a plurality of corrugations therein formed with similar semicircular tangential walls at the center of the panel, the centers of which lie in a plane parallel to the panel, the semicircular walls flattening out to a rectangular cross section, with the compression and tension members increasing similarly in flat width from the semicircular portions to the rectangular.

10. A metal panel for car ends having a plurality of corrugations therein formed with similar semicircular tangential walls at the center of the panel, the centers of which lie in a plane parallel to the panel the semicircular walls flattening out to a rectangular cross section, with compression and tension members increasing similarly in flat width from the semicircular to the rectangular, and connected by arcuate portions of varying radii to the main walls.

11. A metal panel for car ends having a plurality of corrugations formed therein with arcuate contours which merge into substantially rectangular contours, the length of the contour of said corrugations remaining constant.

12. A metal panel for car ends having a plurality of corrugations with varying contour and varying depth, the length of thecontour of said corrugations remaining constant.

13. A metal panel for car ends having a plurality of corrugations thereln formed formed therein with varying depth, constant width, and varying contour, the length of the contour of said corrugations remaining constant.

14. A metallic panel for car ends having. a corrugation formed therein with an arcuate contour which merges into a substantially rectangular contour.

15. A metallic panel for car ends having a corrugation formed therein with an arcuate contour which merges into a substantially rectangular contour, said corrugation varying in depth.

16. A metallic .panel for car ends having a corrugation formed therein with an arcuate contour which merges into a. substantially rectangular contou'r. said corrugation re maining constant in width and varying indepth.

VINTON SISSON.

panel forcar ends having a' 

